Liljedahl may refer to:

• Edvard Liljedahl, (1845-1924) Norwegian politician
• Magnus Liljedahl, American sailor
• Marie Liljedahl, Swedish actress
• Peter Liljedahl

• General Ironfitters' Association
• Generalisability theory
• Generalisations
• Generalised anxiety
• Generalised Anxiety Disorder
• Generalised beam theory
• Generalised conic
• Generalised conics
• Generalised epilepsy
• Generalised exponential
• Generalised exponential function
• Generalised factorial
• Generalised Likelihood Uncertainty Estimation
• Generalised logarithm
• Generalised logarithm function
• Generalised periodic epileptiform discharges
• Generalised tonic-clonic seizure
• Generalised tonic–clonic seizure
• Generalised Venn diagram
• Generalised Venn Diagram
• Generalised Whitehead product
• Generalised Whitehead Product
• Generalissimo Chiang Kai-shek
• Generalitat of Catalonia
• Generality of Catalonia